Immanuel Kant
Two things fill the mind with ever-increasing wonder and awe, the more often and the more intensely the mind of thought is drawn to them: the starry heavens above me and the moral law within me. Dare to think for yourself. A man who has committed a mistake and doesn't correct it, is committing another mistake. All our knowledge begins with the senses, proceeds then to the understanding, and ends with reason. There is nothing higher than reason.
